Round or square cover be shosen PC material to guarentee high brigtness Product Name: Water-proof fixturesSpecifications: 1) Use for: construction project, office, living room, department store and so on. 2) Power: 1X20W, 1X40W, 2X20W, 2X40W 3) Voltage: 220V,240V 4) Frequency: 50/60Hz 5) Material: The crust is made of PC material 6)Packing: Standard export carton Water-proof fixtures